Home / 672,279.20-1,008,418.80-423,447.20

Finding the Fourth Proportional to 672,279.20, 1,008,418.80 and 423,447.20

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Solution

The fourth proportional to 672,279.20, 1,008,418.80 and 423,447.20 is: 635,170.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,279.20 : 1,008,418.80 = 423,447.20 : x
  2. Step 2: Convert to fraction form
    672,279.20/1,008,418.80 = 423,447.20/x
  3. Step 3: Cross multiply
    672,279.20x = 1,008,418.80 × 423,447.20
  4. Step 4: Simplify right side
    672,279.20x = 427,012,117,287.36
  5. Step 5: Solve for x
    x = 427,012,117,287.36/672,279.20
  6. Step 6: Final answer
    x = 635,170.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.